STAR Certified Smog Check Stations in Castro Valley, CA

7 STAR certified stations in Castro Valley, California, out of 9 licensed smog check stations total. A STAR station is specially certified by the Bureau of Automotive Repair — some vehicles are required by their DMV renewal notice to test at a STAR station specifically. See our STAR certification guide for details, or view all 9 stations in Castro Valley if STAR isn't required for your vehicle.